Dave - "The aim was to replace the old pond which was at decking level, the other side of a handrail, and to incorporate the pond into the decking and slightly raised so that viewing the fish and pond life was better. I also included a pressurised filter under the decking and added a water blade for effect. We have also installed underwater lighting for evenings"

Rectangular koi pond designCynthia & David Cox, Rushden
DIY Plastic Duck Pond. Easy To Keep CleanGorgie City Farm